<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="Generator" content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Helvetica;
panose-1:2 11 6 4 2 2 2 2 2 4;}
@font-face
{font-family:"MS Mincho";
panose-1:2 2 6 9 4 2 5 8 3 4;}
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:"\@MS Mincho";
panose-1:2 2 6 9 4 2 5 8 3 4;}
@font-face
{font-family:"\@SimSun";
panose-1:2 1 6 0 3 1 1 1 1 1;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoListParagraph, li.MsoListParagraph, div.MsoListParagraph
{mso-style-priority:34;
margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:.5in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:SimSun;
mso-fareast-language:ZH-CN;}
p.yiv5881716729msobodytext, li.yiv5881716729msobodytext, div.yiv5881716729msobodytext
{mso-style-name:yiv5881716729msobodytext;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
p.yiv5881716729msonormal, li.yiv5881716729msonormal, div.yiv5881716729msonormal
{mso-style-name:yiv5881716729msonormal;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
span.yiv5881716729msohyperlink
{mso-style-name:yiv5881716729msohyperlink;}
span.yiv5881716729msohyperlinkfollowed
{mso-style-name:yiv5881716729msohyperlinkfollowed;}
span.yiv5881716729emailstyle17
{mso-style-name:yiv5881716729emailstyle17;}
span.yiv5881716729emailstyle18
{mso-style-name:yiv5881716729emailstyle18;}
p.yiv5881716729msonormal1, li.yiv5881716729msonormal1, div.yiv5881716729msonormal1
{mso-style-name:yiv5881716729msonormal1;
margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
p.yiv5881716729msobodytext1, li.yiv5881716729msobodytext1, div.yiv5881716729msobodytext1
{mso-style-name:yiv5881716729msobodytext1;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
span.yiv5881716729msohyperlink1
{mso-style-name:yiv5881716729msohyperlink1;
color:blue;
text-decoration:underline;}
span.yiv5881716729msohyperlinkfollowed1
{mso-style-name:yiv5881716729msohyperlinkfollowed1;
color:purple;
text-decoration:underline;}
span.yiv5881716729emailstyle171
{mso-style-name:yiv5881716729emailstyle171;
color:#1F497D;}
span.yiv5881716729emailstyle181
{mso-style-name:yiv5881716729emailstyle181;
color:windowtext;}
span.yiv5881716729d2hbreadcrumbslinkseparator
{mso-style-name:yiv5881716729d2hbreadcrumbslinkseparator;}
span.EmailStyle30
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:#002060;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:847333561;
mso-list-type:hybrid;
mso-list-template-ids:91902480 67698703 67698713 67698715 67698703 67698713 67698715 67698703 67698713 67698715;}
@list l0:level1
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level2
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level3
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
@list l0:level4
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level5
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level6
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
@list l0:level7
{mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level8
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;}
@list l0:level9
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
text-indent:-9.0pt;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
--></style></head><body lang="EN-US" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060">Hi John,</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060">I haven’t opened/picked apart your model, but some time ago I provided the following outline to this mailing list for a procedure to consider:</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"> </span></p><p class="MsoNormal" style="margin-left:.5in"><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Hi Nikola, good to hear from you!</span></i></p><p class="MsoNormal" style="margin-left:.5in"><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></i></p><p class="MsoNormal" style="margin-left:.5in"><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">An approach I like to start with (sometimes this is a rough approximation, other times it is very accurate & appropriate), is:</span></i></p><p class="MsoListParagraph" style="margin-left:1.0in"><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman""> </span></span></span></i><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Establish an outside temperature at and below which the waterside economizer is designed to handle the building’s cooling loads (or largely so)</span></i></p><p class="MsoListParagraph" style="margin-left:1.0in"><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman""> </span></span></span></i><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Create a “free cooling” chiller with an EIR a hair above zero (something like 0.0000001), attach it to the CHW loop(s) servicing your coils, alongside the regular chiller(s)</span></i></p><p class="MsoListParagraph" style="margin-left:1.0in"><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman""> </span></span></span></i><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Create a pair of equipment control sequences: “Free” and “Normal”</span></i></p><p class="MsoListParagraph" style="margin-left:1.5in"><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman""> </span></span></span></i><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">For the “Free” control sequence, assign the “free cooling chiller” in the first row to handle loads first. You may optionally also assign the actual chillers and associated capacity ranges for each.</span></i></p><p class="MsoListParagraph" style="margin-left:1.5in"><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><span style="mso-list:Ignore">b.<span style="font:7.0pt "Times New Roman""> </span></span></span></i><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">For the “Normal” control sequence, specify your normal chiller sequence of operations</span></i></p><p class="MsoListParagraph" style="margin-left:1.0in"><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><span style="mso-list:Ignore">4.<span style="font:7.0pt "Times New Roman""> </span></span></span></i><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Then create a Load Management of type OA-TEMP. </span></i></p><p class="MsoListParagraph" style="margin-left:1.5in"><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman""> </span></span></span></i><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Set the outside air temperature below which free cooling is active under management sequence 1, and assign the free cooling control sequence defined in the previous step.</span></i></p><p class="MsoListParagraph" style="margin-left:1.5in"><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><span style="mso-list:Ignore">b.<span style="font:7.0pt "Times New Roman""> </span></span></span></i><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Set management sequence 2 to a maximum OSA temp of 999, and assign the normal control sequence from the previous step</span></i></p><p class="MsoNormal" style="margin-left:.5in"><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></i></p><p class="MsoNormal" style="margin-left:.5in"><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Integrating WSE into eQuest is one of those things I always plan on spending extra time on – the devil is in the details! I don’t believe waterside economizer systems are something you can make a simple rote procedure around, as actual waterside economizer system operations/limitations are varied and nuanced. Consider this a simple outline to convey the approach concept & get you started. I would particularly advise paying close attention to your pumping and heat rejection energies from this point forward.</span></i><i><span style="font-family:SimSun"></span></i></p><p class="MsoNormal" style="margin-left:.5in"><i> </i></p><p class="MsoNormal" style="margin-left:.5in"><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Hope that helps get you started - Happy new year!</span></i></p><p class="MsoNormal" style="margin-left:.5in"><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></i></p><p class="MsoNormal" style="margin-left:.5in"><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">~Nick</span></i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060">I have simulated a number of different WSE arrangements since posting that, but still follow the same general outline/strategy. The sequencing part in particular is where the meat of the puzzle lies, project to project. You should be able (and I advise) to describe for yourself in writing exactly how the chiller(s) and free cooling operation should sequence with each other. Then go and translate that into a meaningful set of equipment control sequence inputs. I have found actually entering the “capacity” of free cooling at the chiller makes complicated sequencing a bit more manageable as an extra tip, but it may come down to just how your brain processes the problem what approach is easiest.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060">Best of luck!</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060">~Nick</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"> </span></p><div><p class="MsoNormal"><b><span style="font-size:14.0pt;font-family:"Calibri",sans-serif;color:#002060">NICK CATON, P.E.</span></b><span style="font-size:11.0pt;font-family:"Verdana",sans-serif;color:#1f497d"><br></span><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#561782">Owner</span></b></p><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#561782"> </span></b></p><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#561782">Caton Energy Consulting</span></b><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:black"><br></span><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> 306 N Ferrel</span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> Olathe, KS 66061</span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> office: 785.410.3317</span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#561782"><a href="www.catonenergy.com"><span style="color:#561782">www.catonenergy.com</span></a></span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"></span></p></div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"> </span></p><div><div style="border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Equest-users [mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>John Aulbach<br><b>Sent:</b> Thursday, November 05, 2015 11:21 AM<br><b>To:</b> Bishop, Bill; Julien Marrec<br><b>Cc:</b> Equest-users<br><b>Subject:</b> Re: [Equest-users] Water side economizer</span></p></div></div><p class="MsoNormal"> </p><div><div id="yui_3_16_0_1_1446743833961_5380"><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black">Gentlemen:</span></p></div><div id="yui_3_16_0_1_1446743833961_5380"><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black"> </span></p></div><div id="yui_3_16_0_1_1446743833961_5380"><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black">Here is the model. Pick away. I just don't think it makes sense in SoCal vs an air side.</span></p></div><div id="yui_3_16_0_1_1446743833961_5380"><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black"> </span></p></div><div id="yui_3_16_0_1_1446743833961_5380"><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black">Please keep the client close to your vest. This building is on the site of the old Gene Autry studios.</span></p></div><p class="MsoNormal" style="background:white"><span style="font-family:"Verdana",sans-serif;color:black"> </span></p><div><p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="font-family:"Verdana",sans-serif;color:black"> </span></p></div><div><div><div><div><p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">On Thursday, November 5, 2015 8:39 AM, "Bishop, Bill" <<a href="mailto:bbishop@pathfinder-ea.com">bbishop@pathfinder-ea.com</a>> wrote:</span><span style="font-family:"Helvetica",sans-serif;color:black"></span></p></div><p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="font-family:"Helvetica",sans-serif;color:black"> </span></p><div><div id="yiv5881716729"><div><div><div><p class="MsoNormal" style="background:white"><span style="font-size:11.0pt;font-family:"Helvetica",sans-serif;color:black">John,</span><span style="font-family:"Helvetica",sans-serif;color:black"></span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-size:11.0pt;font-family:"Helvetica",sans-serif;color:black">The energy savings for air handler water-side economizers (WSE) will largely depend on the pumping energy, as you note. These are different than the water-side economizers that are cooling towers for serving chilled water systems, allowing chiller(s) to turn off. </span><span style="font-family:"Helvetica",sans-serif;color:black"></span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-size:11.0pt;font-family:"Helvetica",sans-serif;color:black">The default coil head is pretty high (20’) so override the default if appropriate to your design.</span><span style="font-family:"Helvetica",sans-serif;color:black"></span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-size:11.0pt;font-family:"Helvetica",sans-serif;color:black"> </span><span style="font-family:"Helvetica",sans-serif;color:black"></span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-size:11.0pt;font-family:"Helvetica",sans-serif;color:black"><img border="0" width="533" height="293" id="yiv5881716729_x005f_x0000_i1028" src="cid:image001.png@01D11993.EE900D80"></span><span style="font-family:"Helvetica",sans-serif;color:black"></span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-size:11.0pt;font-family:"Helvetica",sans-serif;color:black"> </span><span style="font-family:"Helvetica",sans-serif;color:black"></span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-size:11.0pt;font-family:"Helvetica",sans-serif;color:black">The DOE2.2 help menu description for WSE is in this section: </span><span style="font-family:"Helvetica",sans-serif;color:black"><span class="MsoHyperlink">Volume 2: Dictionary</span><span class="yiv5881716729d2hbreadcrumbslinkseparator"> > </span><span class="MsoHyperlink">HVAC Components</span><span class="yiv5881716729d2hbreadcrumbslinkseparator"> > </span><span class="MsoHyperlink">SYSTEM</span><span class="yiv5881716729d2hbreadcrumbslinkseparator"> > </span><span class="MsoHyperlink">Cooling Equipment</span></span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-size:11.0pt;font-family:"Helvetica",sans-serif;color:black">Part of the description mentions operation to supplement (not entirely replace) the cooling coil and/or air-side economizer:</span><span style="font-family:"Helvetica",sans-serif;color:black"></span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">The water-side economizer coil is assumed to be downstream of the mixed air plenum, and upstream of the cooling coil. As such, the cooling coil may supplement the operation of the water-side economizer. The air handler may also have a conventional outdoor-air economizer, in which case the outdoor-air economizer will operate first to meet the supply-air setpoint, then the water-side economizer will supplement the outdoor-air economizer, and the cooling coil will pick up the remaining load, if any. </span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-size:11.0pt;font-family:"Helvetica",sans-serif;color:black">Regards,</span><span style="font-family:"Helvetica",sans-serif;color:black"></span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-size:11.0pt;font-family:"Helvetica",sans-serif;color:black">Bill</span><span style="font-family:"Helvetica",sans-serif;color:black"></span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-size:11.0pt;font-family:"Helvetica",sans-serif;color:black"> </span><span style="font-family:"Helvetica",sans-serif;color:black"></span></p></div><div><p class="MsoNormal" style="background:white"><b><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">William Bishop, PE, BEMP, BEAP, CEM, LEED AP | Pathfinder Engineers & Architects LLP</span></b><span style="font-family:"Helvetica",sans-serif;color:black"></span></p></div><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="526" style="width:394.8pt;border-collapse:collapse"><tr style="height:13.45pt"><td width="345" style="width:258.45pt;padding:0in 5.4pt 0in 5.4pt;height:13.45pt"><div><p class="MsoNormal" style="line-height:105%"><b><span style="font-size:9.0pt;line-height:105%">Senior Energy Engineer</span></b></p></div></td><td width="182" rowspan="6" style="width:136.35pt;padding:0in 5.4pt 0in 5.4pt;height:13.45pt"><div><p class="MsoNormal" style="line-height:105%"><span style="font-size:9.0pt;line-height:105%"><img border="0" width="70" height="47" id="yiv5881716729Picture_x0020_4" src="cid:image002.jpg@01D11993.EE900D80"> <img border="0" width="57" height="49" id="yiv5881716729Picture_x0020_2" src="cid:image003.jpg@01D11993.EE900D80"></span></p></div></td></tr><tr style="height:4.55pt"><td width="345" valign="top" style="width:258.45pt;padding:0in 5.4pt 0in 5.4pt;height:4.55pt"><div><p class="MsoNormal" style="line-height:105%"><span style="font-size:5.0pt;line-height:105%"> </span></p></div></td></tr><tr style="height:9.8pt"><td width="345" nowrap valign="bottom" style="width:258.45pt;padding:0in 5.4pt 0in 5.4pt;height:9.8pt"><div><p class="MsoNormal" style="line-height:105%"><span style="font-size:9.0pt;line-height:105%">134 South Fitzhugh Street Rochester, NY 14608</span></p></div></td></tr><tr style="height:12.4pt"><td width="345" valign="top" style="width:258.45pt;padding:0in 5.4pt 0in 5.4pt;height:12.4pt"><div><p class="MsoNormal" style="line-height:105%"><b><i><span style="font-size:9.0pt;line-height:105%">T: (585) 698-1956</span></i></b><b><i><span style="font-size:11.0pt;line-height:105%"> </span></i></b><span style="font-size:11.0pt;line-height:105%"> </span><span style="font-size:9.0pt;line-height:105%">F: (585) 325-6005</span></p></div></td></tr><tr style="height:9.8pt"><td width="345" valign="top" style="width:258.45pt;padding:0in 5.4pt 0in 5.4pt;height:9.8pt"><div><p class="MsoNormal" style="line-height:105%"><span style="font-size:11.0pt;line-height:105%"><a href="mailto:wbishop@pathfinder-ea.com" target="_blank"><span style="font-size:9.0pt;line-height:105%">bbishop@pathfinder-ea.com</span></a></span><span style="font-size:9.0pt;line-height:105%"> </span><span style="font-size:11.0pt;line-height:105%"><a href="http://www.pathfinder-ea.com/" target="_blank"><span style="font-size:9.0pt;line-height:105%">www.pathfinder-ea.com</span></a></span></p></div></td></tr><tr style="height:24.6pt"><td width="345" valign="top" style="width:258.45pt;padding:0in 5.4pt 0in 5.4pt;height:24.6pt"><div style="margin-top:3.0pt"><p class="MsoNormal" style="line-height:105%"><span style="font-size:11.0pt;line-height:105%"><img border="0" width="42" height="40" id="yiv5881716729Picture_x0020_5" src="cid:image004.png@01D11993.EE900D80" alt="http://png-5.findicons.com/files/icons/977/rrze/720/globe.png"></span><span style="font-size:7.5pt;line-height:105%">Carbon Fee and Dividend - simple, effective, and market-based.</span></p></div></td></tr></table><div><p class="MsoNormal" style="background:white"><span style="font-size:11.0pt;font-family:"Helvetica",sans-serif;color:black"> </span><span style="font-family:"Helvetica",sans-serif;color:black"></span></p></div><div id="yiv5881716729yqt33026"><div><p class="MsoNormal" style="background:white"><b><span style="font-size:11.0pt;font-family:"Helvetica",sans-serif;color:black">From:</span></b><span style="font-size:11.0pt;font-family:"Helvetica",sans-serif;color:black"> Equest-users [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Julien Marrec<br><b>Sent:</b> Thursday, November 05, 2015 11:17 AM<br><b>To:</b> John Aulbach <<a href="mailto:jra_sac@yahoo.com">jra_sac@yahoo.com</a>><br><b>Cc:</b> Equest-users <<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>><br><b>Subject:</b> Re: [Equest-users] Water side economizer</span><span style="font-family:"Helvetica",sans-serif;color:black"></span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black"> </span></p></div><div><div><div><div><div><div style="margin-bottom:12.0pt"><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">John,</span></p></div></div><div><div style="margin-bottom:12.0pt"><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">Never did a waterside economizer for RTUs, but a couple of points I think I remember:</span></p></div></div><div style="margin-bottom:12.0pt"><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">The waterside economizer in eQuest is all or nothing: if it can satisfy the entire load, then it's on, otherwise it's off. Are you autosizing or hardsizing it?</span></p></div></div><div style="margin-bottom:12.0pt"><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">It also poses the questions of how you reset the condenser water loop temperature, and how you reset the rooftop supply air temperature during low load condition.</span></p></div></div><div style="margin-bottom:12.0pt"><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">What are your current settings?</span></p></div></div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">Julien</span></p></div><div><div><div style="margin-bottom:12.0pt"><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black"> </span></p></div></div></div></div></div><div><div id="yiv5881716729yqt92255"><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black"><br clear="all"></span></p></div><div><div><div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">--<br>Julien Marrec, EBCP, BPI MFBA<br>Energy&Sustainability Engineer<br>T: +33 6 95 14 42 13<br><br>LinkedIn (en) : <a href="http://www.linkedin.com/in/julienmarrec" target="_blank">www.linkedin.com/in/julienmarrec</a><br>LinkedIn (fr) : <a href="http://www.linkedin.com/in/julienmarrec/fr" target="_blank">www.linkedin.com/in/julienmarrec/fr</a></span></p></div></div></div></div></div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black"> </span></p></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">2015-11-05 15:11 GMT+01:00 John Aulbach <<a href="mailto:jra_sac@yahoo.com" target="_blank">jra_sac@yahoo.com</a>>:</span></p></div><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt"><div><div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">Hello all and HALP !!</span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black"> </span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">I have an office building in Los Angeles that is looking to go LEED Core and Shell. It has some exterior and back of the house lighting, so the savings there make sense. But the building has 6 DX 30-50 ton Trane rooftop package units, two on the 1st floor and one for each of the other 4 floors. These are WATER COOLED units.</span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black"> </span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">These units have a central outside air stream, and have WATER SIDE ECONOMIZERS.</span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black"> </span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">My Base model has an air side economizer (still water cooled condensers). The proposed model removes the air side and replaces it with the water side.</span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black"> </span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">The units themselves are EER 14+, whereas the Base units are 10.8 EER.</span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black"> </span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">Results show a SLIGHT savings in Space Cooling, which I attribute to the EER improvement MINUS the air side economizer removal (Jan and Dec space cooling load INCREASES in the Proposed Case).</span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black"> </span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">But the pumping energy skyrockets about 50% (remember, no chilled water).</span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black"> </span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">I am unsure if I am running the water side correctly. There is only the one line of data at ever SYSTEM level.</span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black"> </span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">Help??</span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black"> </span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">John R. Aulbach</span></p></div></div><div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black">Aging engineer (by the minute)</span></p></div></div></div></div><div style="margin-bottom:12.0pt"><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black"><br>_______________________________________________<br>Equest-users mailing list<br><a href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org" target="_blank">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><br>To unsubscribe from this mailing list send a blank message to <a href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG" target="_blank">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a></span></p></div></blockquote></div></div><div><p class="MsoNormal" style="background:white"><span style="font-family:"Helvetica",sans-serif;color:black"> </span></p></div></div></div></div></div><p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="font-family:"Helvetica",sans-serif;color:black"> </span></p></div></div></div></div></div></div></body></html>